Set JAVA_HOME for an specific app

[lpccoder]

New usign box64 on ampere OCI to try to execute a java64 app which uses their own java.
I have changed the JAVA_HOME variable to /home/remotelpc/QDM_125_linux_20251215/j64 wich is the specific java for this app
echo $JAVA_HOME confirms that is set correctly to home/remotelpc/QDM_125_linux_20251215/j64
but when I try to execute:
box64 ./QDM_125_linux_20251215/QDataManager_nocheck
Dynarec for ARM64, with extension: ASIMD AES CRC32 PMULL SHA1 SHA2 PageSize:4096 Running on Neoverse-N1 with 4 Cores
Params database has 38 entries
Box64 with Dynarec v0.2.6 nogit built on Jan 24 2024 21:25:30
BOX64: Detected 48bits at least of address space
Counted 51 Env var
BOX64 LIB PATH: ./:lib/:lib64/:x86_64/:bin64/:libs64/:/usr/x86_64-linux-gnu/lib/
BOX64 BIN PATH: ./:bin/:/usr/local/sbin/:/usr/local/bin/:/usr/sbin/:/usr/bin/:/sbin/:/bin/:/usr/games/:/usr/local/games/:/snap/bin/:/home/remotelpc/QDM_125_linux_20251215/j64/bin/
Looking for ./QDM_125_linux_20251215/QDataManager_nocheck
Rename process to "QDataManager_nocheck"
Using native(wrapped) libdl.so.2
Using native(wrapped) libpthread.so.0
Using native(wrapped) libc.so.6
Using native(wrapped) ld-linux-x86-64.so.2
Using native(wrapped) libutil.so.1
Using native(wrapped) librt.so.1
Using native(wrapped) libbsd.so.0
2025-12-30 07:24:41.521 [WARNING] No launcher configuration file. Using default configuration parameters
2025-12-30 07:24:41.523 [ERROR] Error starting QuantDataManager

Message:
Java Virtual Machine library not found

Details:
/usr/bin/j64/lib/server/libjvm.so

How can I setup box64 to get the java libraries from /home/remotelpc/QDM_125_linux_20251215/j64 instead of /usr/bin/j64/ ?

[ptitSeb]

Your box64 is really super old. v0.2.6 is like 3 year old! You should update to v0.3.8 or current git head first.

[lpccoder]

Compiled followins instructions of https://github.com/ptitSeb/box64/blob/main/docs/COMPILE.md - Example of generic ARM64 build for linux platforms
But now:
box64 /home/remotelpc/QDM_125_linux_20251215/QDataManager_nocheck
[BOX64] Box64 arm64 v0.3.9 e0b4a8a with Dynarec built on Dec 30 2025 12:20:38
[BOX64] Dynarec for ARM64, with extension: ASIMD AES CRC32 PMULL ATOMICS SHA1 SHA2
[BOX64] Running on Neoverse-N1 with 4 cores, pagesize: 4096
[BOX64] Will use hardware counter measured at 25.0 MHz emulating 3.2 GHz
[BOX64] Detected 48bits at least of address space
[BOX64] Counted 53 Env var
[BOX64] Library search path:
[BOX64] Binary search path: ./:bin/:/usr/local/sbin/:/usr/local/bin/:/usr/sbin/:/usr/bin/:/sbin/:/bin/:/usr/games/:/usr/local/games/:/snap/bin/:/home/remotelpc/QDM_125_linux_20251215/j64/bin/:/home/remotelpc/QDM_125_linux_20251215/j64/
[BOX64] Looking for /home/remotelpc/QDM_125_linux_20251215/QDataManager_nocheck
[BOX64] Dynarec for ARM64, with extension: ASIMD AES CRC32 PMULL ATOMICS SHA1 SHA2
[BOX64] Running on Neoverse-N1 with 4 cores, pagesize: 4096
[BOX64] Will use hardware counter measured at 25.0 MHz emulating 3.2 GHz
[BOX64] Rename process to "QDataManager_nocheck"
[BOX64] Using native(wrapped) libdl.so.2
[BOX64] Using native(wrapped) libpthread.so.0
[BOX64] Using native(wrapped) libc.so.6
[BOX64] Using native(wrapped) ld-linux-x86-64.so.2
[BOX64] Using native(wrapped) libutil.so.1
[BOX64] Using native(wrapped) librt.so.1
[BOX64] Using native(wrapped) libbsd.so.0
2025-12-30 12:33:45.642 [ERROR] Error starting

Message:
Unable to resolve executable path

Details:
lstat /home/remotelpc/QDM_125_linux_20251215/QDataManager_nocheck: invalid argument

What this error means?

[ptitSeb]

I'm unsure. is this program downloadable somewhere?

[lpccoder]

From https://api.strategyquant.com/downloads?code=qdmlinux125&_gl=1*1vv2woo*_gcl_au*MjQ5NzQ5NDY1LjE3NjUxMDg1MzI.*_ga*NDk1OTk2NDcxLjE3NTcxNzEyMTQ.*_ga_C3653Q4RPG*czE3NjcxMTE2ODgkbzQ5JGcwJHQxNzY3MTExNjg4JGo2MCRsMCRoMA..

Or from https://strategyquant.com/quantdatamanager/download/ -> tab Linux -> Quant Data Manager for Linux

[lpccoder]

Don't know if this helps, but I try another way to execute it with no success:
remotelpc@vnic-nuevainstancia:~/QDM_125_linux_20251215$ box64 ./j64/bin/java ./QDataManager_nocheck
[BOX64] Box64 arm64 v0.3.9 e0b4a8a with Dynarec built on Dec 30 2025 12:20:38
[BOX64] Dynarec for ARM64, with extension: ASIMD AES CRC32 PMULL ATOMICS SHA1 SHA2
[BOX64] Running on Neoverse-N1 with 4 cores, pagesize: 4096
[BOX64] Will use hardware counter measured at 25.0 MHz emulating 3.2 GHz
[BOX64] Detected 48bits at least of address space
[BOX64] Counted 53 Env var
[BOX64] Library search path:
[BOX64] Binary search path: ./:bin/:/usr/local/sbin/:/usr/local/bin/:/usr/sbin/:/usr/bin/:/sbin/:/bin/:/usr/games/:/usr/local/games/:/snap/bin/:/home/remotelpc/QDM_125_linux_20251215/j64/bin/:/home/remotelpc/QDM_125_linux_20251215/j64/
[BOX64] Looking for ./j64/bin/java
[BOX64] Dynarec for ARM64, with extension: ASIMD AES CRC32 PMULL ATOMICS SHA1 SHA2
[BOX64] Running on Neoverse-N1 with 4 cores, pagesize: 4096
[BOX64] Will use hardware counter measured at 25.0 MHz emulating 3.2 GHz
[BOX64] argv[1]="./QDataManager_nocheck"
[BOX64] Rename process to "java"
[BOX64] Using native(wrapped) libz.so.1
[BOX64] Using emulated /home/remotelpc/QDM_125_linux_20251215/j64/bin/../lib/libjli.so
[BOX64] Using native(wrapped) libpthread.so.0
[BOX64] Using native(wrapped) libdl.so.2
[BOX64] Using native(wrapped) libc.so.6
[BOX64] Using native(wrapped) ld-linux-x86-64.so.2
[BOX64] Using native(wrapped) libutil.so.1
[BOX64] Using native(wrapped) librt.so.1
[BOX64] Using native(wrapped) libbsd.so.0
[BOX64] Using emulated /home/remotelpc/QDM_125_linux_20251215/j64/lib/server/libjvm.so
[BOX64] libjvm detected, disable Dynarec BigBlock and enable Dynarec StrongMem, hide SSE 4.2
[BOX64] BOX64ENV: Variables overridden:
BOX64_DYNAREC_BIGBLOCK=0
BOX64_DYNAREC_STRONGMEM=1
BOX64_SSE42=0
[BOX64] Using native(wrapped) libm.so.6
[BOX64] Warning: Weak Symbol collector_func_load not found, cannot apply R_X86_64_JUMP_SLOT @0x7fff02507a78 (0x296526)
[BOX64] Using emulated /home/remotelpc/QDM_125_linux_20251215/j64/lib/libjimage.so
[BOX64] Using emulated /home/remotelpc/QDM_125_linux_20251215/j64/lib/libjava.so
[BOX64] Using emulated /home/remotelpc/QDM_125_linux_20251215/j64/lib/libjsvml.so
[BOX64] Using emulated /home/remotelpc/QDM_125_linux_20251215/j64/lib/libnio.so
[BOX64] Using emulated /home/remotelpc/QDM_125_linux_20251215/j64/lib/libnet.so
Error: Could not find or load main class ..QDataManager_nocheck
Caused by: java.lang.ClassNotFoundException: //QDataManager_nocheck

[xiangzhai]

Hi @lpccoder

I argue that ./j64/bin/java ./QDataManager_nocheck is not able to work even on x86_64.

Thanks,
Leslie Zhai

[lpccoder]

Yes, I know that ./j64/bin/java ./QDataManager_nocheck is not able to work even on x86_64, I'm not a Java expert and I only added this command in case it helps figure out why it's failing.
The correct command to execute is only ./QDataManager_nocheck and I tested it on a Linux Debian x86_64 machine and it works.